Machine for making prepared roofing



Sept. 2, 1930. R. MACLEAN 1,774,988 uAcHINE Fon MAKING PREPARED nooFmGFiled May 1, 192e 5 sneetsheez 1 Y Jzmemfor La l COe/ .aclem A vw lSept. 2, 1930. R. MAcLEAN HACHINE FOR MAKING PREPARED ROOFING 5sheets-snee: '2

Filed May l. 1926 @valvular oe'r dem Sept. 2, 1930. I` R, MACLEAN1,774,988

SHINE FOR-MAKING. PREPARED ROOFING Filed may 1, 192e 5 sheets-sneer sSept. 2, 1930. R. MACLEAN y 1,774,938

CHINE FOR MAKING PREPARED ROOFING l med May 1, 192e '5 sheets-sheet 4@QM/Vw" R. MACLEAN NAGHINE FOR MAKING PREPARED Roomse Sept. 2, 1930.

Filed May 1`, 1926 s sheets-sneer s .Patented Sept. 2. 1930 i UNITEDsTATEs EPATENTOFFICE ROBERT MACLEAN, or CHICAGO, ILLINOIS, AssIGNoa rroAMALGAMATED ROOFING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION orILLINOIS y MACHINE FOR MAKING PREPARED RoorINe` Application :tiled May1, 1926. Serial No. 106,163.

y My invention relates to the manufacture of prepared rooting, andincludes among., its objects improvements in apparatus for making suchroofing, and among its advantages convenience in discharging diiferentcom-binations of grits onto theroofing and in changing from onecombination `to another.

In the accompanying drawings;

Figure 1 is a perspective view, more or less diagrammatic, intended toshow the relation between the various elements of my improved mechanism;l

Figure 2 is corresponding a cross section taken on a line to line 2-2 ofFigure 1, but

- drawn upon an enlarged scale;

Figure 3 is an end view of the mixer formin a part of my apparatus;

i'gure 4 is a transverse section through the drum of the mixer;

Figure 5 is a longitudinalsection through the drum, 'taken on line 5-5of F iugre 3 and showing, in addition, portions of the conveyormechanism employed;

Figure 6 'is a plan View' of the mixer and certain of the associatedparts; and

i, Figure 7 isa side elevation of one of the .bins showing certainl'details 01E-construction. of the spout for delivering grits from thebin. 30 In the embodiment of the invention selected for illustration,the tank 10 holds a suitable saturant through which the strip 11 may-bedrawn.Y At 12 I have illustrated a hopper comprising a plurality' oftransverselyvextendingvbins 13, one of the end ones of which ris dividedinto a plurality of Smaller bins 14. Pipes 15 extend downwardly fromeach of the smaller bins 14 and discharge into corresponding bins 16 inthe auxiliary hopper 17.

Each of the bins 13 is provided at its lower end with an openingcontrolled by a gate 18 that can be opened by means of a suitable leveror handle 19. VIn a similar manner the auxiliary hopper 17 is providedat its bottom with means for controlling the vdischarge o grits from thebin's 16. The grits from the bins 13 are fed onto the inclined chute 20and are distributed onto the felt stripl by the l distributing roller21, as are also the grits discharged from the bins "16.

For supplying the various kinds of grits to the bins 13, 14 and 16 Iprovide a' plurality of storage bins 22, 23, 24, 25, 26 and 27 forholding the different kinds of grits. A belt conveyor 28, that 1ra" bemounted upon suitable pulleys 29 anu` driven by a motor 3G throughsuitable reduction gears 31 and '32 (see Figure 6), extends along theWall ofthe bins and this wall is provided with a dis-.

charge opening 33 for each 'of the/ storage bins. Inside ofeach'7storage bin is a measur# .Ing hopper 34 having an inclined bottom35 leading to the discharge opening 33 and provided with suitableindicia for indicating th'e capacities of the hopper when filled to thedifferent levels so that. the workmen can accurately determine eachquantity of grits that is tobe fed to the conveyor. Communicationbetween l the hopper 34 and the discharge opening 33 is effected bymeans of a suitable gate, or valve, 36 that can be opened and closed bymeans of the rod 37 extending upwardly inside the hopper and gui-dedbyfsuitable clips 38 secured to the wall of the bin.

An apertured plate 39 surrounds the outer end-of each discharge Opening33 and is suitably secured to the Wall of the correspondingbin. Thisplate is provided with outwardly extending lugs 40 upon which arepivotally Vmounted the hinge lugs: 41 at the inner end of the dischargespout 42, pivot pins 43jbeing employed for this purpose.

The discharge spout 42 is, in general, rectangular in cross section butis inclined relatively tothe .adjacent wall oi the bin in the directionof travel of the conveyor bel-t, so that the grits will be moving in thedirection of movement of the belt before they are discharged upon thebelt, thereby tending to so closely engage the conveyor belt, it isnecessary to provide means for lifting them out of the way so that theywill not interfere with. the transfer of grits from other bins. For thispurpose I provide any suitable 5 means for elevating these spouts, such,for instance, as a suitable cable 46, one end of which isfsecured to thespout and the .other end of which passes over a suitable guide pulley 47and is secured to a lever 48. To hold the lever 48 in its adjustedposition I provide a suitable' segmental rack 49 and a co-acting detent50 that 'can be moved Iinto and out. of engagement with the rack 49 lbymeans of the handle `51 and the link 52 in a manner well known -to thoseskilled in this art,v

At 53 I have illustrated, more or lessdiagrammatically, a verticallyextending conveyor that terminates in a flexible conduit 54,

by means of which the grits can be delivered .to anyone of the .bins 13or 14. .The conveyor 53 may be of purely conventional construction andfor this reason the details of its construction will not be furtherreferred to. It is intended to receive the grits from the iirst conveyor28 and. discharge-them into any one of the bins 13 or 14..

Interposed between the conveyor 28 and the conveyor 53 is a `mixercomprising a- .which position they fall -to the bottom of the drum wherethey arelagain picked` up, and this operation is repeated until thegrits have hoppers and the spouts described above,`any quantity of anydifferent kinds of grit can be discharged into the mixer. In order toinsure the discharge of grits from the conveyor belt 28.into the mixer,I provide the latter with theehute 64 (see, Figure 5) that is pivotedat'65 'upon asuitableangle iron support 66. The outer end of this "chuteis positioned :so as to receive the discharge from the conveyor belt 28and drop it to the bottom of the drum 55. f ,Y

For the purpose of withdrawing the grits from the drum 55.when they havebeen suflines in Figure'5 Ito the position shown in4 65 dottedloutlinein the same figure. This tiltbeenlsatisfactorily mixed. It will,of course,l be understood that by vmeans of the measuring ticientlymixed, provide a second. chute "67 ing can be accomplished through thelink 70, the lower end of/'which is pivotally connected at 71' with anarm 72 projecting from then chute and the upper end of which ispivotall-yA connected with the lever 73 that is pivotally' 70 mountedintermediate its l ends upon the bracket74. A counterweigh-t 75,adjustably mounted upon the lever 73, provides means for holding thechute 67 in the position shown in dotted outline.

` When the two chutes 64 and 67 occupy the position shown in full linein Figure 5, the" mixer drum is bypassed, thatis, the grits pass fromtheconveyor 28 tothe conveyor 53 without being mixed. This operation 4isfacilitated by a suitable., hopper-76 that conducts l the grits fromtheI chute -67 to the lower end of the conveyor 53. When it is desiredto mix the grits discharged from the conveyor 28, the lever 73-is moved.to position the chute 67, as shown in dotted outline in Figure 5,whereupon the 'grits discharged from the chute 64 drop downwardly, firststriking the inner end of the chute67 and then falling into the bottomof the drum 55. VThe latter performs its mixing operation and when thechute 67 is returned to the positionshown in full lines the mixedgrits-'are delivered to the bottomof the conveyor 53.

` From the above description it wil-l be aplparent that the operators incharge of my im- A Y proved mechanism can select any desired quantityyof any of the grits and discharge them onto the conveyor 28. If it isde-sired tocoat the strip 11 with a single color, these 100 grits areconveyed by the conveyor 28, the two chutes v64 and 67 the .conveyor 53and the` terminal spout 54"directly to` one of the bins 13. Bymanipulating the proper ,lever 19, the pperators vca n cause the gritsto be discharged properly upon the'strip 11. 4It it issnV desired toproduce roofing coated with a mixture of two or more colors, theoperators'deliver the proper quantity of grits of each color uponytheconveyor 28y and manipulate 110 the lever 7 3r to depress' the'^fch3,1te67, whereupon these grits are delivered'fC/into the mixer. When theyhave been sufciehtly mixed, the chute 67 is elevated, and the mixedgrits discharged `into the-conveyor 53 land'delivered, 115 into one ofthe bins 13. "If it'is desired to coatthe strip with stripes ofdifferent colored grits, these grits are separately deliveredfby theconveyors 28 and 53 and deposited into the bins 14, from whence they arefed to the `bins 16 and then discharged onto the'strip.

If it is desired to form the stripes on the roofing from mixtures ofdierent grits, the de-- 'sired colors can be mixed before beingconcomplished by discharging grits over the entire width of the stripfrom one of the bins r 13 and the grits thus supplied to the strip 13)Atypes and color-s of roofing;

may be either of one color or'a mixture of different color-s. j

'At 77 I have disclosed a discharge opening through which grits ,may bedischarged directly from the adjacent -bin into the conveyor'53. Thisopening is preferably formed -in the bin holding that character of gritsWhich are used in the largest quantities. At

the present time, green grits are in the greatest favorvwith architects,and for that rea-son I have shown this. opening located in vthe storagebin forlholding green grits. By permitting these grits to be dischargeddirectly into the conveyor 53, very considerable Wear upon the belt 28isavoided.

From the above description it Will be apparent tliatI have provided amachine that is adaptable to the production of numerous l and that theoperations required for producing'any one type o roofing, or forchanging from one type of roofing to another, are reduced to a minimum;and'it is equally apparent that the change from one type of roofing toanother is accom- `veyors. y

panied by a minimum loss in time and ma. terials.

IVhile I have described the details of construction of the preferredembodiments of my invention, it is to be clearly understood that myinvention is not limited to these de tails, but is capableof otheradaptations and modifications Within the scope of the appended claims.

Having thus described my invention, what I claim is:

measured quantities of gritsonto said con` y veyor, a.

second conveyor-for receiving grits from said first conveyor andterminating in means for discharging said grits into any one ofsaidxfirst named bins,'and a-mixer interposed between said iirst andsecond con-V 2. The combination with a roofing coating machinecomprising means for advancing` a strip of roofing material, apluralityof bins for holding means for selectively controlling the dis?`different kinds 'of grits, and

vcharge of grits from said binsonto saidstrip, of means for supplyingthe different kinds of grits to said bins comprising a first conveyor, apluralityzof storage bins, each provided with means for dischargingquantities of grits onto said conveyor, ai second conveyor for receivinggrits from said first conveyor and for discharging said grits'intoy anyone of said i a plurality of veyor, each having a Wall proyidedvvithan/f' .first named bins, and amixer interposed-betvveen said irstand second'conveyors.

3. .The'conibination With-'a roofing coating machine comprising ,meansstrip ofrooiing material, aplurality of bins for lholding differentkinds of grits, means for selectively controlling the discharge of gritsfrom said bins onto said strip,

of. means for supplying the different kinds of grits to sai-d binscomprising a iirst conveyor', a plurality of storage. bins, eachprovided with means for discharging measuredquanti- 'ties of grits ontosaid conveyor, a second conveyor forreceiving grits from said firstconveyor and for'discharging'said grits into anyone of said iirst namedbins, and a. mixer interposed between said first and second cpnmachinecomprising 'means for advancing a strip of for controlling the dischargeof grits from vsaid bins onto said strip, of means for supf,

plyingthe differentkiiids of grits to said bins/5 comprising a firstconveyor, a plurality y fr storage bins, each provi-ded With means and.

roofing material, a plurality of binsl for holding diderent'kinds ofgrits, and means for advancing a 4. 'Ihe combination With a roofingcoating discharging lquantities of, grits )onto said. poriveyor, .and asea/fond,l conveyor for recel/'ving grits from said/first conveyora/ndfor/lifsrst charging said grits into any/one/of said named bins.

'5. Means yf/or supplying grits to a roofing coating machine comprisinga first conveyor,

bins arranged along said conopening, a .measuring device supported acenteach opening for discharging measured quantities of each of thedifferent kinds of 'I grits onto said conveyor, a second conveyor,

a mixing mechanism interposed between said first and second conveyor,for receiving grits from said first conveyor,mixing said grits anddelivering them -to said second conveyor, said mixing mechanismcomprising4 means that in one position directs grits from said firstconveyor into sai-d mixing mechanism and in another position dischargesgrits from said mixing mechanism onto said second'conveyor. v

6. Means for supplying grits to 'a'roofing coating machine comprising afirst conveyor, a plurality of bins arranged along said conveyor, eachhaving aL measuring device for discharging measured quantities of each of the,

different kinds of grits onto said conveyor, a

second conveyor, a mixing mechanisml inter-- posed between said firstand second conveyors for receiving grits from said first conveyor,-

mixing said grits and delivering them to said second conveyor, saidmixing mechanism comprising means` that in i-oiie position directsVgrits from said first conveyor into said mixing mechanism and in anotherposition disiic ychargesgrits from said mixing mechanisml onto saidsecon-d conveyor. ff A I 7Means "for supplying 'grits to a rootingdoating `machine comprising a. first conveyor, a plural yty/of ,bilisarranged along said co'nr dischargii' .inea-sured quantities of leachoit the Vitlithei'` "irrtfilzi'nds` of grits onto said conveyor,`` ascond' conveyor, a mixing mechanism interposed between said first andsec# ond conveyors for. receiving grits from said first conveyor, mixingsaid grits and delivering them'to said second conveyor.

8. Means for supplying `grits to arooingl coating machine comprising aiirst conveyor,

a plurality of bins arranged along said conyveyor, each having a deviceforvdiscliarging quantities of each of the diierent kinds of grits ontosaid conveyor, a second conveyor, and means for conveying rits from saidfirst conveyor to said secon `conveyor comL prising fa mixing mechanism.l9. The combination with a roofing coating "machine 'comprising meansfor advancing` a f'for holding different kinds of grits, and 4means-'forselectively controlling the dis-l l for separately'holding saiddifferent kinds of' grits, and common means for delivering gritsl stripof rooting material, a'p'lurality of bins,

charge of grits from said bins onto said strip, of means for supplyingthe different kinds of grits to said bins comprising storage means fromany one'of said storage means to any one oi said bins, including meansfor mixing the grits from two or more 'ot said storage' l means.

10. The combination with a roofing coating v machine requiring deliveryof grits in small small quantities during operation thereof, of

quantities during operation thereof, of a' set Vofsmall bins, means forfeeding material com vtinuously from said bins 'onto a strip of roof-ling material, a set 'of large storage bins filled withdil'erentliinds'of material, and continuously operative selective meansIfor replenishiiig any small bin from any storage bin.

11. The combination with a roofing coating machine requiring delivery ofgrits in a'set of small bins, means for'feeding material continuouslyfrom said bins Onto a strip of roofing material, a set of large storagebins illed With different kinds of material, and selective means for'replenishingA any r small bin from anystorage bin..y

In Witness whereof, I hereunto subscribe my name this 28th day of April,1926.

, ROBERT MACLEAN.

